yet another exhaust manifold query

Right. I never really wanted to go with headers unless I had to. I've never found headers to all they're cracked up to be. I read the Hot Rod article and I'm not a bit surprised by the findings. Just for kicks I looked at the TTI headers, but I don't like the idea of buying a $250 starter on top of $800 for the headers themselves. I'm perfectly happy with whatever manifold will work, but clearly when I hold up my 273 manifolds to the 360 heads I can see that the ports are way off.

So perhaps the '69 318 manifold will work better.

If it helps at all to mention, I do have a manual transmission with four on the floor and I removed the z-bar in favor of a hydraulic clutch PEDAL kit.

Thanks for the responses, everyone.